Optimize a PNG Graphic
Balance clarity against data footprint by re-encoding and trimming the palette. Runs entirely in your browser, so your data never leaves your device.
Drop a file here, or click to browse
Files never leave your device
Output
The result appears here as you type.
How to use Optimize a PNG Graphic
- 1. Upload the PNG. Add the graphic you want optimized. The tool reads its current color depth and prepares to re-encode it with a smaller palette.
- 2. Set the max colors. Enter a value for Max colors to decide how much the palette gets trimmed. A lower number produces a smaller file at the cost of subtle color detail, a higher number keeps more nuance.
- 3. Download the optimized PNG. Save the re-encoded file once the balance between clarity and file size looks right for its intended use, whether that is a web page or an app asset.
When to use Optimize a PNG Graphic
Optimize a PNG Graphic balances visual clarity against data footprint by quantizing the color palette and re-encoding the file. Use it whenever an existing PNG is heavier than it needs to be for how it will actually be displayed.
- Trimming an icon for faster page loads. An icon.png with a full 256-color palette is larger than it needs to be for a small on-screen glyph. Re-encoding at 256 colors with better compression shrinks it without visible loss.
- Preparing assets for a mobile app bundle. An app's bundled image assets need to stay under a size budget to keep install size down. Optimizing each PNG's palette trims the bundle without touching the app's code.
- Reducing bandwidth for a high-traffic page. A page graphic gets served millions of times a month, so even a small per-file savings adds up. Quantizing and re-encoding it cuts bandwidth costs at scale.
Examples
Optimize an icon
Input
icon.png + 256 colors
Output
icon.png quantized and re-encoded for the web
About the Optimize a PNG Graphic tool
Optimize a PNG Graphic is a free online tool that works entirely inside your web browser. Balance clarity against data footprint by re-encoding and trimming the palette. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 108 PNG utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with the Max colors setting, and the result refreshes the moment you change it. The finished file is put together in browser memory and saved with the Download button, so it never touches a server on the way to your disk. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Is Optimize a PNG Graphic free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Are my files uploaded to a server?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
Which files does Optimize a PNG Graphic accept?
It accepts PNG images. There is no file size cap imposed by a server; very large files are limited only by your device's memory.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I save the output?
Click the Download button once the result is ready. The file is built in your browser's memory and handed straight to your downloads folder, without passing through a server.